Supernatural (TV series)/Recap/S01/E09 Home

Season 1, Episode 9:

Home

Sam has a nightmare about something attacking an innocent family in the Winchester's old family home in Lawrence, Kansas. They investigate and enlist the help of a psychic medium to defeat what turns out to be a poltergeist. When Sam's premonition starts to come true and the brothers are unable to defeat the poltergeist, the ghost of their mother Mary appears and sacrifices herself to save her sons. Once the brothers leave town, it's revealed that their father John was there the whole time, keeping an eye on Sam and Dean with the psychic's help.

Tropes

Bavarian Fire Drill: Dean tries to bluff his way into the house, but is interrupted when Sam opts for honesty instead.
Cymbal-Banging Monkey: One laughs while the plumber gets his arm chopped up in the garbage disposal.
Dirty Mind Reading: implied with Missouri's powers.
Fridge Logic: Why on Earth are the fridge shelves spaced just high enough to leave room for a kid to climb in. And why would a kid walk into a fridge in the first place? He isn't a cat!
Hair of Gold
Mama Bear
Meaningful Echo: "Take your brother outside as fast as you can."
Sassy Black Woman: Missouri. Her bullying Dean is one of the high points of the episode.